get_typed_return_annotation() — fastapi Function Reference

Architecture documentation for the get_typed_return_annotation() function in utils.py from the fastapi codebase.

Function python DependencyInjection Resolver calls 2 called by 1

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DependencyInjection→ Resolver→ get_typed_return_annotation() — fastapi Function Reference

Dependency Diagram

graph TD
  7ee6f7cb_c895_d136_b942_3a323fcab521["get_typed_return_annotation()"]
  9e602cbf_3139_86ae_5666_97b8806942de["utils.py"]
  7ee6f7cb_c895_d136_b942_3a323fcab521 -->|defined in| 9e602cbf_3139_86ae_5666_97b8806942de
  d8b4fb83_3521_0b7e_fcfa_0c7f161ca116["__init__()"]
  d8b4fb83_3521_0b7e_fcfa_0c7f161ca116 -->|calls| 7ee6f7cb_c895_d136_b942_3a323fcab521
  fbcdf484_be03_f18c_5e32_2ef21742686c["_get_signature()"]
  7ee6f7cb_c895_d136_b942_3a323fcab521 -->|calls| fbcdf484_be03_f18c_5e32_2ef21742686c
  e8e5e486_6061_0953_033a_81c4f70588c1["get_typed_annotation()"]
  7ee6f7cb_c895_d136_b942_3a323fcab521 -->|calls| e8e5e486_6061_0953_033a_81c4f70588c1
  style 7ee6f7cb_c895_d136_b942_3a323fcab521 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

fastapi/dependencies/utils.py lines 245–254

def get_typed_return_annotation(call: Callable[..., Any]) -> Any:
    signature = _get_signature(call)
    unwrapped = inspect.unwrap(call)
    annotation = signature.return_annotation

    if annotation is inspect.Signature.empty:
        return None

    globalns = getattr(unwrapped, "__globals__", {})
    return get_typed_annotation(annotation, globalns)